Here's a list of all of the explore encounters for december, as well as which options you should pick to get the most StB. Encounters with no options have not been listed.

Never gives StB: Goose with Knife, Albino Rhino, Albino Zebra, Albino Gazelle, Albino Crow, Elderly Albino Lion, Black Wolf, Scary Lions, Albino Hyena, Frozen Valley, Jaguar, Lion with Shark.

Gives StB, but only has one option: Krampus, Menhit and Apollyon, Bodybuilder Lion (battle, gives +2 and rare chance of egg yolk if you win), Harbinger, Fabulous Mantis, Monkey and Crocodile Sled, Green Cub, Demiurge.

ENCOUNTER	CHOICE	NOTES
V'kai and Vashkartzen	Any	+3 StB for any option
Lion in Poop	Shove back in!	+2 StB for both. Whack does not give StB.
Bear Cavalry	Race!	+2 StB. Attack gives no StB.
Broken Leopon	Punish the Artist	+2 StB. Punish the Leopon gives no StB.
Floppy Lion	Ask about the ears	+2-4 StB. Smack the ears gives no StB.
Albino Snake	Help the Snake	+2 StB or decor.
Laharu and Anubis	Offer Food	+3 StB. Steal food only gives +2.
Unicorn Zebra	You're Fake News!	+1 StB if you win.
Dancing Grivets	Any	Both give +2 StB
Elephants Burying Calf	Any	All give +2-4 StB